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surender mohan
database problem
1 Answer(s)      3 years and 2 months ago
Posted in : Java Beginners


I did connect my jsp page to database and it showed the result on another jsp page but i want to show the data of that field on which i click to mouse from the jsp page where all the data field has been showed. Please suggest me what will the code of it.


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May 16, 2011 at 5:39 PM


1)ajax.jsp:

<%@page import="java.sql.*"%>
<html>
<head>
<script type="text/javascript">
function showData(id){ 

xmlHttp=GetXmlHttpObject()
var url="getdata.jsp";
url=url+"?id="+id;
xmlHttp.onreadystatechange=stateChanged 
xmlHttp.open("GET",url,true)
xmlHttp.send(null)
}
function stateChanged(){ 
if(xmlHttp.readyState==4 || xmlHttp.readyState=="complete"){ 
    var showdata = xmlHttp.responseText; 
    var strar = showdata.split(":");
    document.getElementById("name").value= strar[1];
    document.getElementById("address").value= strar[2];
    document.getElementById("contactNo").value= strar[3];
    document.getElementById("email").value= strar[4];
    } 
}
function GetXmlHttpObject(){
var xmlHttp=null;
try {
  xmlHttp=new XMLHttpRequest();
 }
catch (e) {
 try  {
  xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
  }
 catch (e)  {
  xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
  }
 }
return xmlHttp;
}


</script>
</head>
<body>
<form name="employee" >
<br><br>
<table >
<div id="mydiv"></div>
<tr><td><b>Select:</b></td><td><select name="id" onchange="showData(this.value);">
<option value="-1">--Select--</option>
   <%
   Class.forName("com.mysql.jdbc.Driver");
           Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/test", "root", "root");
           Statement st=con.createStatement();
           ResultSet rs=st.executeQuery("select * from employee ");
           while(rs.next()){
               %>
               <option value="<%=rs.getInt("id")%>"><%=rs.getInt("id")%></option>
               <%
           }
               %>
               </select></td></tr>

<tr><td><b>Name:</b></td><td><input  type="text" name="name" id="name" ></td></tr>
<tr><td ><b>Address:</b></td><td>
<input  type="text" name="address" id="address" ></td></tr>
<tr><td><b>ContactNo:</b></td><td>
<input  type="text" name="contactNo" id="contactNo" ></td></tr>
<tr><td><b>Email:</b></td><td>
<input  type="text" name="email" id="email" ></td></tr>
</table>
</form>    
<table border="0" width="100%" align="center">
<br>
<br>
</table>
</body>
</html>

2)getdata.jsp:

<%@ page import="java.sql.*" %> 
<%
int id = Integer.parseInt(request.getParameter("id"));
String data ="";
try{
           Class.forName("com.mysql.jdbc.Driver");
           Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/test", "root", "root");
           Statement st=con.createStatement();
           ResultSet rs=st.executeQuery("select * from employee where id="+id+"");
while(rs.next())
{
data =":"+rs.getString("name")+":"+rs.getString("address") + ":" + Integer.parseInt(rs.getString("contactNo"))+":"+rs.getString("email");
}
out.println(data);
System.out.println(data);
}
catch (Exception e) {
System.out.println(e);
}
%>


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